ARM: ZERO_PAGE: Avoid flush_dcache_page() for zero page
authorRussell King <rmk+kernel@arm.linux.org.uk>
Sun, 25 Oct 2009 10:23:04 +0000 (10:23 +0000)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Tue, 1 Dec 2009 18:20:07 +0000 (18:20 +0000)
The zero page is read-only, and has its cache state cleared during
boot.  No further maintanence for this page is required.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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